Intermittent electric make-and-break device



March 2, 1926. 1,575,536

H. C. BUNTING INTERMITTENT ELECTRIC MAKE AND BREAK DEVICE.

Filed April 16, 1.923 2 shqts-sheet 1 gmvmtoe Harbar? G. Bunfing March2,1926. 1 1,575,536 H. C. BUNTING m'rsman'rnn'r ELECTRIC MAKE AND BREAKDEVICE Fild Ab'ril 16 192? 2 Sheets-Sheet" 2 Herbert 8'. Sum??? T B TA IPATE T OFFICE; 4 i E M fi 5 ZiEwASaNGaa r iNTERMI' IP TENFI "nLnc'rBIcMAKE AhTDQBREAK DEVlCE. if. a

" 'Applicationfiled April 16, 1923. Seria1N-o. 632,57.

g I load circuit.- By a load circuit is herein Be it knoWntliat'I, HEBERT C. BUNTI NG, 'meant not only the 'circuitiwhich maybe a'citizfen ofthe United States of America, used for operatinglamps or motors, but aand resident ofthe city. of Seattle, in the circuit which may-beusedforcontrolling jcounty. ofKing and .;State of \Vashington, iswitches'for operating a power circuit. It

have; invented certain new and: useful 1110- is immaterial in myinvention Whether the :provements in Intermittent "Electric Makecircuitherein illustrated and referred to as "ind-Break.Devices,gof.wliich thefollowing a load circuit, be theuutimate' load circuit is aspec'ification. I 01f.an vintermedirate circuit which controls an Myinvention relates toiintermitteit elecultimate load circuit} 6Q tric.make-and-brealo devices or devices Thetype of electric motor whichIprefer which""are intended to' i j oiitrol an electric :to use is thatWhichconsists of a solenoid. current by producing"s-intermittent makes-1Such a motor .is prompt in its action, has a and-breaks therein.Whilethe device, has" reciprocating movement and is excellently g .5beendesigned for.'usefaspa'fiasher for the; "adaptedfor the purpose. I vcontrolfof circuits in electric signs, it is w In the drawings, 1represents a'solenoid gcapable-ofuse for otherfpurposes whereincoil'andlO the solenoidcore', The solenoid termittent make-and-breakcurrent is re is preferablyplaced with its axis in vertical "quiredg j fposition sothat the return. movement is 20 Thefobject of myinvention'isto provide caused by gravity and theweight of the. a devicefor the purposejstated which will core. It .ls, of course, obviousthatthe re- 1 be simple and certain its operation,v and turn movement may becaused by other the construction. of which is also cheap and .means,asby the action of aspring which .durablej v f Woulden'able thesolenoid-to be placed in' Ot h 1 bj t f y. invention may be otherpositions than with its axis vertical.

' [.SellfI'Olll astudy of-the following deserip- Tlo'lthe lower end of-the;solenoid core tion' andthe claims .Which terminate the. may besecured a Weight, as 12, ifsuch be same, i 1 f. y 7 needed to insure aprompt return movement In the. accompanying drawings I haveof:Ith'esolenoid core and. there may also be 1 show my inventionembodied in; the type of Secured thereto a buffer 13 h1ch may be of '80constructionil now prefertousel I any soft-compresslble materialdeslgned to Figure 'lf-is. a face 'vieW ,of the; device ta keuip theshock caused by the stoppage showing the position occupied .by the parts7 otth-e core in itsupward or electr cally acupon thecompletion ofthestroke Which is .tuated: movement. The'bufi'eryljii rests upon causedby thejdir'ect action foftheelectrical the We1ght-12and the latter maybe sup imot'o'r, 1 r portedyin adjusted position .by means of a 7Fi'u'reZisaiace'vie v'ofithe samedevice threadedbolt].ol',screw 'll. Byadjusting 'fshoxvingtheposition of, the parts on the. this up orl'down,the exact termination of 'Tf completion of the return or gravityactuated the upwardv stroke of the core, may be ,con-, j 'tml'geof.thedevice. trolledaand through this accurately control H 4 .iFigurepgs n d e 'yiewrof the device, the operation of the other parts of the andFigureA illustrates the pawl and mechanism. The we1ghtc'12 may alsov beratchet c'onnectionbetween the two shafts; changed to secure the desiredreturning Figure 5-sho-Ws the adjustable contactseg force. I

' ments and'the manner of their mounting, -The solenoid ,core sactuatively connectthe insulating sleeve beingfin section. I ed Withthesyvitch controlling means. The ;This device. operates byathe action ofan means for doing this illustrated consists of electricalfmot or whichis placed in a local .a bar '11 secured to the upper end of the fcontrollingcircuitand which by its move solenoid core vlOjjand mountedto reciprocate mentcQntrols-a m ke-andreak device in a, withina'guideorguides.l aeda1 p0n 9.

1 Tali/Q cu wmaima 'wmm;

face having a series of-teeth cut to mesh "with a gear 2 mounted to turna shaft 20.

i The stroke of the solenoid-core is regulated .of the device" I so asto give en ma and definite angle of turnto the gear 2. This may bevaried 1n different apparatus and made as much as a complete; turn but1n. theapparaitus herein illustrated this movement 18 approximately 90.The ,angle'of movement needed 'is de termined by the gear ratio,l'betweenfparts Secured iipon and to turn w-iith thesha tt 120 arerotativecontactxmembers of :two circuit controllingdevicesg'onecontrolling-the load circuit and the other controlling ,thefC iT Cult Of the solenoid: as "it has "beenillustrated, *The ;rota-tivemembers of theload circuit con,- trolling device'ha's two c- 1 26"permanently in electrical?oon'ricctioiifivitli cu'larserinents St),

L each other 'and 'insulated fr n the other 7 parts of the device. v

v Preferably the segments '30 are ihade'integral" with theconnecting-ring 3; :These are mounted upon an insulat ng sleeve'7 andthe whole upon a 'm'e ta'l sleeve 20 which is a djustahly securedtuponthe shaft QOas by.

a set screw 4', Insulating disks at each side of :the device.

suita'ble leads from-the load circuit The [disk i "which: 11881 back ofthe disk 3? in the handed or clockwise turn ngf' V and the memberscarried thereby the A latter including the arcuateQbar 11; Thts' "will*mmentmn in the solenoidi'core to car-1ft it closed. In thissituationthe so will be rapidly drawn upward; 'l v mcntr 'by'reasonof theconnection between i the rack bar 11 and the jgea" fdevioe as showirinFigures land 2, has a brush or spring finger' 4O contacting therewithand forming-a part of the solenoid actuating circuit. "This'disk also'cai=ries a; spring arm 41 which is of arcua'te character r andco-operatesvdth' a coinpflementalicon tact nien'iber Vhereiu'shownas the'pin om' which pin is mounted upon a disk '5 and v tu'rns about theshaft 51 Aer-n 1; contacts with the disk v and is insorted' in thesolenoid circuit. 1

in the positionshownliirhl H in the pin} 50is"nrengggement th one end ofthe a'rcuate ba l 41 the solenoid circuit is secured "to the} shaft 20,e

continue without breaking the solenoiden Cult in *the arcuate'har-dlpasses the pin hen this happensthereis sufiiqeiit somewlia-t-ibeyolthepointof breaking connormal restfor that shown in'Fi-gure 2, t Q 50$il3i6 11 i with seg -ments fi' turned right'han shown-in Fig-u e 1. 1Tthat "in"; a crl-oc-l-;:w ise direction, the l n time'wiJl have rackthelower end be r of 1e during which t'he 169a c c lenoid "cor-e and aprompt by the required angular movement of the shaft at'each impulse, Asthis in the ma V chine: illustrated is gear 22 which meshes wvith apinion car rotative movementfor a 90Yangulajr mo ment of the gear 22 andshaft 20;"As' t1 T0 are placed moved-backward S O KiStQengage fh'pa"eelbytherestro m. r

the bar, 4LT has 'ieached its; lowermost pos v 'core makes ans-upwardstroke; I This ac his move-p tion with the brushes 81 and to make anmovement of the solenoid core will com-IQ Inence. As this happens theshaft 20 and, v r the parts carried thereby will beturnedf left Y 1handedly or'in an anti-clockwiseedirectionr The-shaftQO has securedthereon a ratchet 1 wheel 2-1 which as heroin shown hasfifourj teeth."The number of teeth is determiner Q09, the wheel 21 I four teeth, v r iMounted looee ly u pon 'the shaft 2Q is r'ie d' by the shaft "51-. Thegear ratiolher issuch that the shaft 5l'is given a 'complet' 8 disk 5which carries the fcontactmember-5M comPlemental to the bar-11 issecured to thc shaft 515' the contact pin 50 1s'given a com p'lete or360 turning movement ap ea stroke ofthe solenoid core. Asthe genre isturned from the ratchet Wheel 21".throug a spring-held pawl 23,the disk5j has'f no movement during the oscillationof the shaf 20in onedirection; This corresponds Wit] the" upward movement" of the, solenoidcor When this occurs the ratchet wheel i hen the down ard fmovementfof tsolenoid core commences theshaft fil wi its disk is-"tur'ned. This givessaid shat and disk an intermittent movement in' l continuouslyfoifwai'cjl direction, which dl rection infltli'e device illustrated isin the sani e'direction, as" l'll' ll lOVfimenllOf the hands,

of a" clock. v r 7 v Asthe movement ofthe contact niemliol coisist-ingjof the pin 501's faster than t1)" t of the arc'uate bar 41forming the compl mentalf'contact member, they will not flue broughtinto contact by this movement lint tion and the pin SOswings under'thesan 1 from its side, or withfthe position jofitlie parts-asfshownfinFigure '2; lVhen -this occurs the solenoid circuit is=,c]losec'l and thetion will be repeated so'long as the current tlllS'Cll'CLlllL i I i.Thearcuate' CODClUClOISBt), 30 Wlric'lrfun break the loadcircuitfishould he adjust-ab A iirangular, position upon the-shaft 20.;A simple means for doing this has been shown tl= con-sistingof't-hesetscrew l-"by-which the segments a nay he I fixed in angularposition uponthe shaft. a;

It is evident'th'at if-lilrth-e position beQlOgied, cl'epends upon-the-Qglftliqf ments*3,Q, 3O withwhiehthe-brushes 31, 82 contacts .Ifthese-segmentsi t), -are anguad-justed 'so thatqtheir entire. lengthcontactswith the-brushes 61,. 32, the-load portion of theirlength contact withthe brushes8'1, 82, the load circuit is closed only and breaking anelectric circuit, a solenoid a'small part of thetime. This relation maybe better. understood if it be remembered thatethe'angular movement ofthe disk 3 is,

in the device illustrated, 90v and the angular extent of the segments30'is also 90"; In the adjustment illustrated, th e arc of contact ofsegments 30 Jwith the brushes is approximately, :which would make theopenand iclosed periods --much shorter than if their' entire lengtlcontacted with the brushes as illustratedconsists of a gear train havinga toothedwheel 6 having operatmg thereon an escapement' 60, whichescapement has an 'arm 61 secured to 1ts shaft and provided with anadjustable weight 62, by thev adjustmentjof which the-ratc j'ofoperation may be controllcch Vh'zit'l claim as invention is:

1 Ina device forintermittently making and.breaking an electric circuit,an oscil-, lating member and a rotating member carrying complementalmake-an'd-break contacts,

a solenoid havingsaid make-'and-break contacts in its exciting circuit,and a make-andbreak devicefor the; load circuit carried by saidoscillating member.

7 2. In a device for, ntermittently making,

raving a member reciprocatedby the inductive action of the currenttherein, a shaft oscillated by the movement of the rec1procable memberof the solenoid, a make-and break device for the load. circuit operatedby tlic 'oscillations of said shaft, a contact disk for the solenoidexciting'circuit earned by said shaft, a rotative shaftlland a delayingmechanis'in connected therewith, comple-Q mcntal contact inen'ibers inthe solenoid err-.7

, citing circuit," one carried "by the rotative shaftJan'd theother bythe'oscillated shaft,

the solenoid-moved one of said .contact' mem-' bers being proportioned"to be carried beyond" the other by the current actuated movement ofthe-solenoid, v 3. A makeand-break mechanism for electric circuitscomprising a solenoid having, a

reciprocating member, a rotative and an oscillating shaft, complemen'talcontact ii/embers in the solenoid exciting circuit and actuated each byits respective shaft, one comprising i a face-projecting member oflimited a e tied he atheist ei' nate 111 m moved by the inductivelyexcited movement of the solenoid to carry the two out of en:

.lgagementyand the other by the gravity circuit is, or: maybe,closedlduringfa large 7 percent: oflthe time. If, however, thesegfmen'ts 30 are; adjusted so. that a very small actuatedln'iovement-jof :the mov bl 'solfinoid member; a

Afr-k make-and-break device comprising a rotative and an oscillatingmember, one

carrying a face-projecting contact and the other a'n'arcuatecomplemental contact, a

comprising an ancuate contact bar and a ,complemental contact pin, saidbar and pin being pivoted to move 1n intersectlng circular paths aboutseparated axes, and electrically actuated means in circuit with saidcontact members for swinging one of said contact members out of contactwith the other. a

6. An electric make-and-break device comprising an arcuate contact barand a complemental contact pm, said bar and pin I being pivoted to move.in intersecting circu larpathsabout separated axes, a solenoid having areciprocable' core, said core havin an actuating connectionwith one ofsal contact members adapted to turn it in one direction, only, and anactuatingeconnection with'the other member adapted to oscillate it,whereby contact betweenthe two members is broken by the electricallyenergized movement of the solenoid and both are moved to position ofrest and contacton the gravity energized movementof the solenoid.

7 In a make-and-break device for electric circuits, a disk andcomplemental con tact members therefor secured in a control circuit, oneof said contact members being able'to vary the angularrelation betweenthe -two,'contact members for said/second disk connected in the loadcircuit, an ,electrically energized means connected, in the controlcircuit and means connectingit' with both of said disks to oscillatethemand with the cyclically movable contact inelnbe r to more itthrough" its cycle while the disks are moving, in one direction. 8. Inamake-and-breakdevrce, two rota- -tively mountedcomplemental contactmembers, an actuating device for said contact members comprising adevice electrically energized for movement in one direction andindependent means for moving it in the return direction, said contactvmembers being in the energizing circuit of their actuat ing device,means connecting the actuating devicewith one at t e cont ct mem ers tomovable in a cycle, a second disk securei "able to turn with the firstdisk and adjustoscillate it'ancl with the rothe rlcontaci; memv ber':togive it intermittent forward 'move- *Anelectric nhake-and-bre'ak devicecom 5 prising 'an' zucuate bar and a complemental contact pin, bothmounted for Separate cir- ,cular movements which vbrings them into conta'c t at afixed point; kin elec'triqally ac-J tuated device havingactuating 'connection with one'of saidjcontact members togive itanoscillating movement. V g Signed "at Seattle; King County, VVa'shQington this 7th'day of April 192 HERBERT C. BUNTING.

